Details

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BUY 74LS30 https://www.utsource.net/itm/p/12357524.html

Parameter	Symbol	Conditions	Min	Typical	Max	Unit
Supply Voltage	VCC	-	4.75	5.0	5.25	V
Input Low Voltage	VIL	IL = 1.6 mA	0.8	-	-	V
Input High Voltage	VIH	IH = -0.4 mA	-	-	2.0	V
Output Low Voltage	VOL	IOL = 16 mA	0.25	-	-	V
Output High Voltage	VOH	IOH = -0.4 mA	-	-	2.7	V
Propagation Delay Time	tpd	VCC = 5V, TA = 25掳C	-	18	-	ns
Power Dissipation	Ptot	-	-	-	500	mW
Operating Temperature Range	TA	-	0	-	70	掳C

Instructions for Using 74LS30:

1. Power Supply:

   • Connect the V_CC pin to +5V and the GND pin to ground.

2. Input Connections:

   • The 74LS30 is an 8-input NAND gate. Connect your input signals to pins 1 through 7.
   • Leave any unused inputs connected to V_CC (5V) to avoid floating inputs.

3. Output Connection:

   • The output is available on pin 8. Connect this to your load or subsequent logic gates as needed.

4. Propagation Delay:

   • The propagation delay time is typically 18 ns at 5V and 25掳C. Ensure that your system timing accounts for this delay.

5. Temperature Considerations:

   • The operating temperature range is from 0掳C to 70掳C. Ensure that the device is used within this range to avoid damage or unreliable operation.

6. Power Dissipation:

   • The maximum power dissipation is 500 mW. Ensure adequate heat sinking if the device is expected to operate near this limit.

7. Handling Precautions:

   • Handle the IC with care to avoid static discharge, which can damage the internal circuits.
   • Use proper soldering techniques and avoid excessive heat during installation.

8. Testing:

   • To test the functionality, apply known input signals and verify the output using a logic probe or oscilloscope. The output should be high (near 5V) unless all inputs are high, in which case the output will be low (near 0V).

By following these guidelines, you can effectively use the 74LS30 8-input NAND gate in your digital circuits.

(For reference only)